Garrus is the ultimate bro. If you don't love him already, you will love him by the time he asks you to hang out on the Citadel. ...Btw, it is imperative that you get the Citadel DLC when you start playing ME3.

making him the leader doesnt matter if legion isnt on the fire squad. and HOLY **** i knew i heard the illusive mans voice somewhere else! i just couldnt put my finger on it. he even kinda looks like him

In my games, Garrus gets shot, stumbles, and then recovers. Though, Legion is usually in there. I just don't think he affects that outcome at all, as he doesn't appear in the cinematic. There's no point total in that scene like there is in the hold the line scene where it adds up all the squadmates' hold the line scores (with Zaeed and Grunt being the highest at this).

now youre on a different page. i was talking about the door scene. and yes, the person from the fire squad dies from a headshot when closing the door unless its legion. do your paperwork on it, youll see im right
now excuse me, i got important matters to attend to